# How to calculate square metres of a wall

If your room is not square or round you will have to measure one wall and calculate from there. Divide the area of the room by the distance you measured; the result is the length of a wall .

**How To Calculate Square Metres - DIY At Bunnings**

By using the area calculator below, it will help you work out the total number of square metres you will require to complete your project. The SI derived unit is the square meter. The square meter is an SI derived unit of area. One square meter is equal to 1 m². The prefix square is a multiplier of a square with a side length .

Triangular wall area formula: S = (a × h) / 2, where а – base, h – height. Square wall area formula: S = a2, where а – side. Rectangular wall area formula: S = a × b, where а, b – sides. .

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